Microrough surface, resulting in a very firm grip. Titanium Nitride coating. Supplied in a handy, tough, pocket sized flip box. 25mm bits, Typ łba = Pozidriv, Typ = Końcówki do elektronarzędzi, Rozmiar = PZ1 (x2), PZ2 (x4), PZ3 (x2), Liczba elementów = 9